Problem when compiling with Chatroulette version 5

  • Hello,
    After compiling the file JabberCam.mxml with Flash Builder 4
    I have this error

    View details for more information ..
    Errors or warnings occurred during generation project JabberCam.mxml.
    JabberCam.mxml: This type is not found or is not a compile-time constant: MapEvent.

    Even with no change in the file JabberCam.mxml
    Can you help me solve the problem
    Thank you


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